The Wi-Fi connection in the HUB-Robeson Center at Penn State being used by students. Research indicates that networks in the future could use lighting systems to help transmit data (Images: Penn State)
Sending and receiving data over a wireless network is generally undertaken via radio waves. But that's not the only method. Using the optical spectrum offers the advantage of better security and blisteringly fast transfer rates to boot. Engineers from Pennsylvania State University have now succeeded in moving data outside the usual line of sight restrictions at speeds of over one gigabit per second, more than double that achieved by Siemens recently.